Do you think my brother's just jealous?

i was watching jay sean's music video "eyes on you" last night and my brother was watching it with me. jay sean grew his hair out, and i like it like that. i was saying he looks hot, and my brother was calling him a f** and saying he looks like a dumba**. i told him you're just jealous and then he said yes i am how do you know im jealous and then he said that im gullible. by the way, my brother also calls himself ugly. do you think he's just jealous of jay sean?